ΔE 12.4, fair: the same colour family, but not a straight swap. Deep Magenta is a little lighter, cooler than Wonka Violet.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Deep Magenta is a little lighter, cooler than Wonka Violet.
The same difference applies the other way round: Wonka Violet is a little darker, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Wonka Violet on the colour wheel See Deep Magenta on the colour wheel
All matches: Wonka Violet equivalents · Deep Magenta equivalents